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Finding the Fourth Proportional to 100,334.02, 138,463.59 and 56,723.10

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Solution

The fourth proportional to 100,334.02, 138,463.59 and 56,723.10 is: 78,279.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,334.02 : 138,463.59 = 56,723.10 : x
  2. Step 2: Convert to fraction form
    100,334.02/138,463.59 = 56,723.10/x
  3. Step 3: Cross multiply
    100,334.02x = 138,463.59 × 56,723.10
  4. Step 4: Simplify right side
    100,334.02x = 7,854,084,061.93
  5. Step 5: Solve for x
    x = 7,854,084,061.93/100,334.02
  6. Step 6: Final answer
    x = 78,279.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.